ASTM C141 C141M-2014 Standard Specification for Hydrated Hydraulic Lime for Structural Purposes《建筑结构用水硬性熟石灰的标准规格》.pdf

1、Designation: C141/C141M 09C141/C141M 14Standard Specification forHydrated Hydraulic Lime for Structural Purposes1This standard is issued under the fixed designation C141/C141M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the ye

2、ar of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers hydrated hydraulic lime for structural purposes.1.2 Hydrated hydraulic lime may be us

3、ed in the scratch or brown coat of plaster, stucco, mortar, or in portland-cement concreteeither as blend, amendment, or admixture.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, theinch-pound units are shown in brackets.The va

4、lues stated in each system may not be exact equivalents; therefore, each system shallbe used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.4 The following precautionary caveat pertains only to the test method portion, Section 11 o

5、f this specification: This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use

6、.2. Referenced Documents2.1 ASTM Standards:2C25 Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated LimeC50 Practice for Sampling, Sample Preparation, Packaging, and Marking of Lime and Limestone ProductsC51 Terminology Relating to Lime and Limestone (as used by the Industry)C10

7、9/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube Specimens)C110 Test Methods for Physical Testing of Quicklime, Hydrated Lime, and LimestoneC187 Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement PasteC191 Test Metho

8、ds for Time of Setting of Hydraulic Cement by Vicat NeedleC230/C230M Specification for Flow Table for Use in Tests of Hydraulic CementC270 Specification for Mortar for Unit MasonryC305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic ConsistencyC778 Specification for

9、SandC1271 Test Method for X-ray Spectrometric Analysis of Lime and LimestoneC1301 Test Method for Major and Trace Elements in Limestone and Lime by Inductively Coupled Plasma-Atomic EmissionSpectroscopy (ICP) and Atomic Absorption (AA)3. Terminology3.1 DefinitionsFor definitions of terms related to

10、this specification, see Terminology C51.3.2 Definitions of Terms Specific to This Standard:3.2.1 hydrated hydraulic lime, nthe product resulting from the slaking of hydraulic quicklime generally to a powder, withoutany addition, and with or without grinding. It has the property of setting and harden

11、ing under water and by reaction of carbondioxide from the air. The hydraulic properties of this material comes only from the composition of the raw materials.3.2.2 hydraulic quicklime, na cementitious product obtained by calcining argillaceous or siliceous limestone, or a mixture ofsimilar compositi

12、on to form sufficient free lime to permit hydration by slaking.1 This specification is under the jurisdiction of ASTM Committee C07 on Lime and Limestone and is the direct responsibility of Subcommittee C07.02 on Specificationsand GuidelinesCurrent edition approved Oct. 1, 2009Dec. 1, 2014. Publishe

13、d November 2009December 2014. Originally approved in 1938. Last previous edition approved in 20052009as C141 97C141/C141M 09.(2005). DOI: 10.1520/C0141_C0141M-09.10.1520/C0141_C0141M-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceast

14、m.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becaus

15、eit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears

16、 at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.3 reworkability, nthe ability of a material which has setting and hardening properties to be remixed after a given periodwithout significantly compromisin

17、g the final hardened properties of the material.3.2.4 period of reworkabilityreworkability, nthe length of time a material can be reworked after initial mixing; it shall beexpressed in hours.NOTE 1Hydrated hydraulic limes have a long working time lasting up to 24 h.The user should seek advice from t

18、he producer as to maximum workingtime.4. Chemical Composition4.1 The hydrated hydraulic lime shall conform to the following requirements as to chemical composition, calculated to thenonvolatileLOI-free basis:Min MaxCalcium and magnesium oxides (CaO and MgO calcu-lated to the nonvolatile basis), %50

19、75Calcium and magnesium oxides (CaO and MgO calcu-lated to the LOI-free basis), %50 75Silica (SiO2 calculated to the nonvolatile basis), % 4 20Silica (SiO2 calculated to the LOI-free basis), % 4 20Iron and aluminum oxides (Fe2O3 and Al2O3caculated to the nonvolatile basis), %. 7Iron and aluminum oxi

20、des (Fe2O3 and Al2O3caculated to the LOI-free basis), %. 7Carbon dioxide (CO2 on an as received basis), % . 16Available lime (CaO calculated with Test MethodsC25 Section 28), %16 .Available lime (CaO calculated with Test MethodsC25 11, Section 28, Available Lime Index), %16 .5. Fineness5.1 The sampl

21、e shall leave a residue of not more than 0.5 % on a 600-m No. 30 sieve(No. 30) sieve, and not more than 10 %on a 75-m No. 200(No. 200) sieve when tested as described in 11.2.6. Time of Setting6.1 The neat lime paste mixed to normal consistency shall not develop an initial set in less than 2 h as det

22、ermined by the Vicatneedle method (see 11.4). Final set shall be attained within 48 h at 100 % RH.7. Reworkability7.1 Test for reworkability as described in sectionsubsection 11.7.1. The average compressive strength value of the second setof cubes (set B) shall not be less than 30 % of the first set

23、 (set A).8. Soundness8.1 The samples when made, stored, and autoclaved as described in 11.5 shall not have an expansion of more than 1.0 %.9. Compressive Strength9.1 The average compressive strength of at least three 50-mm 2-in. cubes, made, stored, and tested in accordance with 11.6,shall be not le

24、ss than 1.7 N/mm2 250 psi and no more than 10.3 N/mm2 1500 psi at the age of 28 days.9.2 The producer shall state the compressive strength, when tested in accordance with 11.6, at the age of 28 days.9.3 The product shall be reworkable at 24 h as tested in accordance with 11.7.NOTE 2For quality contr

25、ol convenience, compressive strengths are tested at 28 days. Hydrated hydraulic limes will gain considerably in strength overtime (up to 90 % of final strength being realized at 12twelve months).10. Sampling10.1 Each sample selected for purpose of tests shall weigh at least 2.3 kg 5 lb and shall rep

26、resent not more than 22 680 kg50 000 lb. If only one sample is taken, it shall weigh at least 4.5 kg 10 lb.10.2 The sample shall be given a preliminary sieving by being passed through a 850-m No. 20 sieve in order to thoroughlymix the sample and break up lumps.10.3 Samples shall be shipped and store

27、d in airtight, moistureproof containers.10.4 The sampling, inspection, rejection, retesting, packaging, and marking shall be conducted in accordance with Practice C50.11. Test Methods:11.1 Chemical Analysis:C141/C141M 14211.1.1 Analyses for chemical composition shall be carried out in accordance wit

28、h Test Methods C25, or, for total elementalanalysis, Test Methods C1271 or C1301. The Available Lime Index shall be determined in accordance with Test Methods C25.11.2 Fineness:11.2.1 Wet sieve testing should Fineness shall be determined by wet sieve analysis or air jet sieving of hydrated lime meth

29、odsfound in Test Methods C110 paragraph 15.411.3 Normal Consistency:11.3.1 Determine normal consistency by the Vicat apparatus in accordance with Test Method C187.11.4 Time of Setting:11.4.1 Determine time of setting by the Vicat needle method in accordance with Test Method C191. The test will be do

30、ne ona sample kept at 100 % RH. It will only be removed for measuring.11.5 Autoclave Expansion:11.5.1 Determine autoclave expansion in accordance with the section onAutoclave Expansion of Hydrated and Hydraulic Limeof Test Methods C110 paragraph 9.3, 14 (subsection 9.3, Procedure for Expansion Testi

31、ng), with the following modifications:modifications to the procedure:11.5.1.1 Weigh 25 6 0.1 g of HHL.Add 3 6 1 ml of water to the weighed sample and mix by hand until wetted. If the balanceallows it, work directly in the specimen mold. If this is not possible, work in an intermediate container and

32、transfer the mixtureto the specimen mold in as a complete state as possible. Press to 5.0 6 1.5 N/mm2 725 6 218 psi for 10 s and demold specimenand autoclave as described.11.6 Compressive Strength:11.6.1 Apparatus:11.6.1.1 Scales and Weights, Sieves, Glass Graduates, Specimen Molds, Tamper, Trowel,

33、and Testing Machine, in accordancewith Test Method C109/C109M.11.6.1.2 Flow Table, conforming to the requirements of Specification C230/C230M.11.6.1.3 Mixing Apparatus, conforming to the requirements of Practice C305.11.6.2 Standard SandUse 2030 sand meeting the requirements of Specification C778.11

34、.6.3 Proportions for Standard Mortar The mortar shall consist of 1 part of hydrated hydraulic lime to 3 parts ofSpecification C778 sand, by weight. The quantity of water measured in millilitres shall be such as to produce a flow of 100 to115 % as determined by the flow table in 11.6.5.NOTE 3This pro

35、portion is by weight and differs from Specification C270, which is by volume.11.6.4 Preparation of Standard MortarMix the mortar in accordance with Section 78 of Practice C305, 14 (Procedure forMixing Mortars), using 500 g of hydrated hydraulic lime and 1500 g of Specification C778 sand with the nec

36、essary water to givethe desired flow.11.6.5 Determination of FlowDetermine the flow in accordance with Section 8.3subsection 10.3 of Test Method C109/C109M. 13 (Determination of Flow).11.6.6 Molding of Test Specimens:11.6.6.1 Prepare molds in accordance with Section 9subsection 10.4 of Test Method C

37、109/C109M. 13 (Molding of TestSpecimens).11.6.6.2 The temperature of the air in the vicinity of the mixing slab and of the dry materials, molds, base plates, and mixingbowl, shall be maintained between 20 and 27.5 C 27.5C 68 and 81.5 F. 81.5F. The temperature of the mixing water, moistcloset or mois

38、t room, and water in the storage tank shall not vary from 23 C 73.4 F 23C 73.4F by more than 6 1.7 C 6 3F. 6 1.7C 6 3F. The moist closet or moist room shall be so constructed as to provide storage facilities for test specimensat a relative humidity of not less than 90 %.11.6.6.3 Mold test specimens

39、in accordance with subsection 10.4 of Test Method C109/C109M. 13 (Molding of TestSpecimens).11.6.7 Storage of Test SpecimensKeep all test specimens, immediately after molding, in the molds on plane plates in a dampcloset, maintained at a relative humidity of 90 % or more, for from 48 to 52 h in such

40、 a manner that the upper surfaces are exposedto the moist air. Then remove the specimens from the molds and maintain them at a relative humidity of not less than 90% untilthe 28 day 28-day tests are performed.11.6.8 Testing of Specimens:11.6.8.1 Test the specimens for 28-day strengths after removal

41、from storage as described in 11.6.7.11.6.8.2 The remainder of the testing procedure shall be in accordance with 8.6 and Section 9 of (Preparation of SpecimenMolds) and subsection 10.6 (Determination of Compressive Strength) of Test Method C109/C109M. 13.11.6.9 Faulty SpecimensSpecimens that are mani

42、festly faulty or that give strengths differing by more than 15 % from theaverage value of all test specimens made from the same sample and tested at the same period, shall not be considered indetermining the compressive strength.11.7 Reworkability: Testing of Specimen:C141/C141M 14311.7.1 Prepare a

43、mortar mix in accordance with 11.6.4 in sufficient amount to be able to fill two sets of three 2-in. cubes. Cutthe mix in half, use first half to prepare a first set of cubes (set A). Store second half in a hermetic container and let rest for 24(61) h. Once waiting time is achieved, mix the mortar o

44、f the second set to achieve required flow as 11.6.5 and prepare a secondset of three cubes (set B). Store all cubes as described in 11.6.7. Measure compressive strength of both sets at 28 days of agestarting with first mixing time as per in accordance with 11.6.12. Storage12.1 The hydrated hydraulic

45、 lime shall be stored in such a manner as to permit easy access for proper inspection andidentification of each shipment, and in a suitable weathertight building that will protect the hydrated hydraulic lime from damage.13. Inspection13.1 Every producer shall provide the purchaser with the opportuni

46、ty to sample and inspect the material either at the place ofmanufacture or at the destination, as may be specified by the purchaser.14. Rejection14.1 ProductThe hydrated hydraulic lime may be rejected if it fails to meet any of the requirements of this specification. Atleast 31 days shall be allowed

47、 for completion of the 28-day test.14.2 PackagingPackages varying more than 10 % from the weight marked thereon may be rejected, and if the average weightof packages in any shipment, as shown by weighing 50 packages taken at random, is less than the weight marked thereon, the entireshipment may be r

48、ejected.15. Packaging and Marking15.1 The hydrated hydraulic lime shall be delivered in suitable containers with the brand and name of the manufacturer and thenet weight plainly marked thereon. All packages shall be in good condition at the time of inspection.16. Keywords16.1 compressive strength; h

49、ydrated hydraulic lime; hydraulic lime; mortar; portland cement concrete; plaster; stuccoSUMMARY OF CHANGESCommittee C07C07 has identified the location of the selected changes to this specificationstandard since thelast issue, issue (C141 97C141/C141M 09(2005),) that may impact the use of this specification (Approvedstandard. (Dec. 1, 2014October 1, 2009).)(1) The standard was revised throughout, including changing the title and making the standard a dual units specification.(1) Added Test Meth